/*
 * Copyright (c) 2007, 2015, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Copyright 2001, 2002,2004 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.sun.org.apache.xerces.internal.dom;

import java.util.Vector;

import org.w3c.dom.DOMStringList;

/**
 * DOM Level 3
 *
 * This class implements the DOM Level 3 Core interface DOMStringList.
 *
 * @author Neil Delima, IBM
 * @xerces.internal
 */
public class DOMStringListImpl implements DOMStringList {

  //A collection of DOMString values
  private Vector fStrings;

  /**
   * Construct an empty list of DOMStringListImpl
   */
  public DOMStringListImpl() {
    fStrings = new Vector();
  }

  /**
   * Construct an empty list of DOMStringListImpl
   */
  public DOMStringListImpl(Vector params) {
    fStrings = params;
  }

  /**
   * @see org.w3c.dom.DOMStringList#item(int)
   */
  public String item(int index) {
    try {
      return (String) fStrings.elementAt(index);
    } catch (ArrayIndexOutOfBoundsException e) {
      return null;
    }
  }

  /**
   * @see org.w3c.dom.DOMStringList#getLength()
   */
  public int getLength() {
    return fStrings.size();
  }

  /**
   * @see org.w3c.dom.DOMStringList#contains(String)
   */
  public boolean contains(String param) {
    return fStrings.contains(param);
  }

  /**
   * DOM Internal:
   * Add a <code>DOMString</code> to the list.
   *
   * @param domString A string to add to the list
   */
  public void add(String param) {
    fStrings.add(param);
  }

}
